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Table 2 Weighted age and education adjusted (severe) disability prevalence (in %) and prevalence ratio by smoking status for those aged 30+, Health Interview Survey 1997 and 2001, Belgium

From: The effect of smoking on the duration of life with and without disability, Belgium 1997–2011

   Disability Severe disability
  N Prevalence (%) Prevalence ratio Prevalence (%) Prevalence ratio
Males      
Never smoker 1667 21.47 1 4.39 1
   (19.48; 23.46)*   (3.54; 5.25)  
Ex-smoker 2325 25.05 1.17 4.41 1.00
   (22.86; 27.24) (1.03; 1.33) (3.50; 5.32) (0.76; 1.33)
Light smoker 1262 27.28 1.27 4.92 1.12
   (24.65; 29.91) (1.11; 1.45) (3.89; 5.95) (0.84; 1.49)
Heavy smoker 842 28.87 1.34 3.63 0.83
   (25.88; 31.86) (1.17; 1.55) (2.72; 4.53) (0.60; 1.13)
Females      
Never smoker 3376 26.60 1 5.84 1
   (26.17; 27.03)   (5.08; 6.59)  
Ex-smoker 1665 30.47 1.15 5.76 0.99
   (27.80; 33.15) (1.03; 1.28) (4.56; 6.96) (0.77; 1.26)
Light smoker 918 32.58 1.22 6.40 1.10
   (27.28; 37.89) (1.03; 1.46) (3.66; 9.14) (0.70; 1.71)
Heavy smoker 548 32.86 1.24 3.88 0.66
   (23.35; 42.37) (0.92; 1.66) (0.30; 7.45) (0.26; 1.68)
  1. *: 95% Confidence Interval.